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Study of the Efficacy of Early Intervention With Secukinumab 300 mg s.c. Compared to Narrow-band UVB in Patients With New-onset Moderate to Severe Plaque Psoriasis

A Randomized, Multicenter STudy to Evaluate the Effect of Secukinumab 300 mg s.c. Administered During 52 Weeks to Patients Suffering From New-onset Moderate to Severe Plaque Psoriasis as Early Intervention Compared to Standard Treatment With Narrow-band UVB (STEPIn Study)

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03020199
Acronym
STEPin
Enrollment
196
Registered
2017-01-13
Start date
2017-03-27
Completion date
2023-06-16
Last updated
2025-01-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Plaque Psoriasis

Keywords

Psoriasis, interleukin (IL) 17A, IL-17A, secukinumab, AIN457, Narrow-band ultraviolet light B, nb-UVB, Psoriasis area and severity index, PASI

Brief summary

The purpose of this study was to determine whether early intervention with subcutaneous (s.c.) secukinumab 300 mg in patients with new-onset moderate to severe plaque psoriasis may lead to prolonged symptom-free periods by preventing reactivation of old lesions or ultimately totally hindering the occurrence of new lesions, i.e., changing the natural course of the disease (Main Study).

Detailed description

This was and open label, parallel group, multicenter, randomized study with 3 clinical periods: Screening period, Treatment period, and Follow-up period. The design consisted of the Main Study and a Mechanistic Sub study: 1. The Main Study had 2-treatment-arm secukinumab and nb-UVB). 2. The Mechanistic Sub-study had 4 arms treated with secukinumab and one arm with nb-UVB arm. The outcome measures were all exploratory, i.e. no results presented. Not all participants of the Mechanistic Sub-study participated in the Main Study, these participants are only reported for the safety analyses, but not for the primary and secondary outcome measures.

Interventions

BIOLOGICALSecukinumab

Secukinumab (AIN457) 300 mg was administered in an open-label fashion according to label as 2 s.c. injections of secukinumab 150 mg (1-mL liquid formulation in a pre-filled syringe). Each 300-mg dose was provided as 2 pre-filled syringes of 150-mg secukinumab in a single box. Each syringe was labeled as AIN457 150 mg/1 mL.

RADIATIONnb-UVB

Narrow-band UVB applied in 1 or 2 cycles, each comprising a period of 12 weeks with 2 to 3 treatment sessions per week totaling 24 to 36 sessions per cycle. The application was performed according to the investigational site's protocol, taking into account the patient's skin type. A maximum dose of 3 J/cm2 on the body and 1 J/cm2 on the face was recommended

Sponsors

Novartis Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 50 Years
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: * Able to understand and communicate with the investigator, willing and capable to comply with all study procedures, and provide written signed and dated informed consent (personally or by a witness) before any assessment is performed. * Aged 18 to 50 years inclusive. * New-onset plaque psoriasis with appearance of the first psoriasis plaques within the last 12 months before randomization and naïve to any systemic treatment and phototherapy (Arm A1, Arm A2, and Arm B1). Episodes of mild psoriasis, which occurred at least 3 years before screening and resolved spontaneously within 6 months will be accepted. * Chronic plaque psoriasis with appearance of the first psoriasis symptoms 5 years or longer and intolerance or inadequate response to phototherapy or any systemic treatment including biologicals, except for IL-17A inhibitors (Arm C1 and Arm C2). * Moderate to severe plaque psoriasis defined at screening and baseline by PASI \>= 10, and body surface area (BSA) \>= 10%, and IGA mod 2011 \>= 3. Key

Exclusion criteria

* Forms of psoriasis other than plaque-type (e.g., pustular, erythrodermic, guttate, light sensitive, and drug induced). * Ongoing use of prohibited treatments. * Previous treatment with phototherapy or any systemic treatment. * Pregnant or nursing (lactating) women. * Women of childbearing potential, defined as all women physiologically capable of becoming pregnant, unless they are using effective methods of contraception during the Treatment period or longer if required by locally approved prescribing information (e.g., 20 weeks in the EU and countries where applicable for secukinumab).

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants Who Achieved Pain Assessment Severity Index (PASI) 90 at Week 52.Baseline, Week 52The PASI quantifies the severity of a participant's psoriasis based on both lesion severity and the percent of Body Surface Area (BSA) affected. PASI is a composite scoring by the investigator of degree of erythema, induration, and scaling (each scored separately) for each of 4 body regions (head and neck, upper limbs, trunk \[including axillae and groin\], and lower limbs \[including buttocks\]), with adjustment for the percent of BSA involved for each body region and for the proportion of the body region to the whole body. The PASI composite score varies in increments of 0.1 and range from 0 (no disease) to 72 (maximal disease), with higher scores representing greater severity of psoriasis. PASI 90 response is a binary measure defined as at least a 90% improvement in PASI score at Week 52, relative to baseline PASI score.

Secondary

MeasureTime frameDescription
Number of Participants Who Achieved PASI 90 at Week 104Baseline, Week 104The PASI quantifies the severity of a participant's psoriasis based on both lesion severity and the percent of Body Surface Area (BSA) affected. PASI is a composite scoring by the investigator of degree of erythema, induration, and scaling (each scored separately) for each of 4 body regions (head and neck, upper limbs, trunk \[including axillae and groin\], and lower limbs \[including buttocks\]), with adjustment for the percent of BSA involved for each body region and for the proportion of the body region to the whole body. The PASI composite score varies in increments of 0.1 and range from 0 (no disease) to 72 (maximal disease), with higher scores representing greater severity of psoriasis. PASI 90 response is a binary measure defined as at least a 90% improvement in PASI score at Week 104, relative to baseline PASI score.
Number of Participants With IGA Mod 2011 0/1 Response at Week 52Baseline, Week 52Investigators assessed the disease using the validated Investigator Global Assessment (IGA) mod 2011 and rated the disease from a score of 0 (clear skin) to 4 (severe disease). Response is defined as a score of 0 or 1 at Week 52.

Countries

Argentina, Bulgaria, Canada, Denmark, Estonia, Finland, Germany, Hungary, Poland, Spain, Sweden, Switzerland, United Kingdom

Participant flow

Recruitment details

Subjects were enrolled in 2 study sites in Argentina, 4 in Bulgaria, 2 in Canada, 4 in Germany, 1 in Denmark, 3 in Estonia, 2 in Finland, 2 in Hungary, 6 in Poland, 8 in Spain, 2 in Sweden, 1 in Switzerland, and 4 in the United Kingdom.

Participants by arm

ArmCount
Secukinumab 300 mg
Eligible patients received 300 mg secukinumab by subcutaneous (s.c.) injection at baseline, Weeks 1, 2, 3, 4 and then every 4 weeks until Week 48 inclusive (treatment duration = 52 weeks) OR every 4 weeks until Week 100 inclusive (last dose administered at Week 100) (treatment duration = 104 weeks).
116
Narrow-band Ultraviolet B (Nb-UVB)
Eligible patients received 1 or 2 cycles of narrow-band ultraviolet B (nb-UVB) of 12 weeks each with a maximum break of 28 weeks between cycles (patients with PASI 90 at Week 40 will not receive a second treatment cycle) (treatment duration = 52 weeks).
80
Total196

Withdrawals & dropouts

PeriodReasonFG000FG001
Follow-up PeriodDisease relapse327
Follow-up PeriodLack of Efficacy12
Follow-up PeriodLost to Follow-up46
Follow-up PeriodPhysician Decision22
Follow-up PeriodProtocol Violation12
Follow-up PeriodStudy terminated by Sponsor63
Follow-up PeriodSubject/guardian decision149
Treatment PeriodAdverse Event02
Treatment PeriodLack of Efficacy16
Treatment PeriodLost to Follow-up16
Treatment PeriodPhysician Decision01
Treatment PeriodSubject/guardian decision815
Treatment PeriodSubjects not treated34

Baseline characteristics

CharacteristicSecukinumab 300 mgNarrow-band Ultraviolet B (Nb-UVB)Total
Age, Customized
18 to 30 years
56 Participants30 Participants86 Participants
Age, Customized
31 to 50 years
60 Participants50 Participants110 Participants
Race/Ethnicity, Customized
American Indian or Alaska Native
0 Participants1 Participants1 Participants
Race/Ethnicity, Customized
Asian
2 Participants3 Participants5 Participants
Race/Ethnicity, Customized
Black or African American
1 Participants1 Participants2 Participants
Race/Ethnicity, Customized
Other
0 Participants2 Participants2 Participants
Race/Ethnicity, Customized
Unknown
0 Participants1 Participants1 Participants
Race/Ethnicity, Customized
White
113 Participants72 Participants185 Participants
Sex: Female, Male
Female
35 Participants25 Participants60 Participants
Sex: Female, Male
Male
81 Participants55 Participants136 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 1120 / 760 / 880 / 76
other
Total, other adverse events
29 / 1128 / 767 / 882 / 76
serious
Total, serious adverse events
6 / 1121 / 760 / 881 / 76

Outcome results

Primary

Number of Participants Who Achieved Pain Assessment Severity Index (PASI) 90 at Week 52.

The PASI quantifies the severity of a participant's psoriasis based on both lesion severity and the percent of Body Surface Area (BSA) affected. PASI is a composite scoring by the investigator of degree of erythema, induration, and scaling (each scored separately) for each of 4 body regions (head and neck, upper limbs, trunk \[including axillae and groin\], and lower limbs \[including buttocks\]), with adjustment for the percent of BSA involved for each body region and for the proportion of the body region to the whole body. The PASI composite score varies in increments of 0.1 and range from 0 (no disease) to 72 (maximal disease), with higher scores representing greater severity of psoriasis. PASI 90 response is a binary measure defined as at least a 90% improvement in PASI score at Week 52, relative to baseline PASI score.

Time frame: Baseline, Week 52

Population: Modified Full Analysis Set (mFAS) from the Main Study: all randomized subjects who received at least one dose of study treatment during the Treatment Period

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Secukinumab 300 mg A1 (A1a+A1b)Number of Participants Who Achieved Pain Assessment Severity Index (PASI) 90 at Week 52.70 Participants
Narrow-band Ultraviolet B (Nb-UVB) B1 (B1a+B1b)Number of Participants Who Achieved Pain Assessment Severity Index (PASI) 90 at Week 52.32 Participants
Comparison: Week 52 PASI 90p-value: <0.000195% CI: [5.9, 48.3]Regression, Logistic
Secondary

Number of Participants Who Achieved PASI 90 at Week 104

The PASI quantifies the severity of a participant's psoriasis based on both lesion severity and the percent of Body Surface Area (BSA) affected. PASI is a composite scoring by the investigator of degree of erythema, induration, and scaling (each scored separately) for each of 4 body regions (head and neck, upper limbs, trunk \[including axillae and groin\], and lower limbs \[including buttocks\]), with adjustment for the percent of BSA involved for each body region and for the proportion of the body region to the whole body. The PASI composite score varies in increments of 0.1 and range from 0 (no disease) to 72 (maximal disease), with higher scores representing greater severity of psoriasis. PASI 90 response is a binary measure defined as at least a 90% improvement in PASI score at Week 104, relative to baseline PASI score.

Time frame: Baseline, Week 104

Population: Modified Full Analysis Set (mFAS) from the Main Study: all randomized subjects who received at least one dose of study treatment during the Treatment Period

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Secukinumab 300 mg A1 (A1a+A1b)Number of Participants Who Achieved PASI 90 at Week 10423 Participants
Narrow-band Ultraviolet B (Nb-UVB) B1 (B1a+B1b)Number of Participants Who Achieved PASI 90 at Week 10426 Participants
Comparison: Week 104 PASI 90p-value: 0.65395% CI: [0.3, 2.1]Regression, Logistic
Secondary

Number of Participants With IGA Mod 2011 0/1 Response at Week 52

Investigators assessed the disease using the validated Investigator Global Assessment (IGA) mod 2011 and rated the disease from a score of 0 (clear skin) to 4 (severe disease). Response is defined as a score of 0 or 1 at Week 52.

Time frame: Baseline, Week 52

Population: Modified Full Analysis Set (mFAS) from the Main Study: all randomized subjects who received at least one dose of study treatment during the Treatment Period

ArmMeasureValue (NUMBER)
Secukinumab 300 mg A1 (A1a+A1b)Number of Participants With IGA Mod 2011 0/1 Response at Week 5285.7 Percentage of participants
Narrow-band Ultraviolet B (Nb-UVB) B1 (B1a+B1b)Number of Participants With IGA Mod 2011 0/1 Response at Week 5236.8 Percentage of participants

Source: ClinicalTrials.gov · Data processed: Mar 6, 2026